Scareware is a type of malware designed to trick victims into purchasing and downloading useless and potentially dangerous software.Scareware, which generates pop-ups that resemble Windows system messages, usually purports to be antivirus or antispyware software, a firewall application or a registry cleaner. The messages typically say that a large number of problems -- such as infected files -- have been found on the computer and the user is prompted to purchase software to fix the problems. In reality, no problems were detected and the suggested software purchase may actually contain real malware. If the user falls for the scam, he will lose the money he paid for the useless software and he may also make his computer unusable. Frequently, the message window has a clickjacking feature that takes the user to the attacker's Web site or initiates a malware download if the user clicks "Cancel" or the "X" to close the window.If you encounter a suspicious pop-up, you…

A lot of changes are happening to our planet each day - for example, look at this five-second time-lapse to see the expansion of Dubai from 1984 to 2012. Hit the Play button to begin after it loads.

This amazing visual data was taken from Google Earth Engine, a platform to quantify differences on the Earth's surface. As given on the site,

"Google Earth Engine brings together the world's satellite imagery — trillions of scientific measurements dating back almost 40 years — and makes it available online with tools for scientists, independent researchers, and nations to mine this massive warehouse of data to detect changes, map trends and quantify differences on the Earth's surface. Applications include: detecting deforestation, classifying land cover, estimating forest biomass and carbon, and mapping the world’s roadless areas."

On the site there are more examples, such as the Amazon Deforestation, Growth of Las Vegas and Saudi Arabia Irrigation among others. Ther…